style.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

::selection {
    color: none;
    background: none;
}

body{
    overflow: hidden;
    height: 100vh;
}

img{
    position: absolute;
    width: 30px;
    height: 30px;
    left: 5%;
    top: 3%;
    border: 5px dashed rgb(255, 255, 255);
    border-radius: 20px;
    cursor: pointer;
}

img:hover{
    transform: translate(-2px, 0px);
}


a {
  text-decoration: none;
  color: black;
}

/* CHECKERS LOGO AND SLIDE SCREEN */
header {
    position: absolute;
    left: 0;
    top: 15%;
    width: 100%;
    border: none;
    color: #ffffff;
    font-family: 'Permanent Marker', cursive; 
}

header h4{
    position: absolute;
    left: 10%;
    bottom: 1rem;
    font-size: 35px;
}

.intro {
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100vh;
    background-color: white;
    transition: 1s;
}

.playArea{
    opacity: 0;
    transition:all 1s;
}

.menuArea{
    opacity: 0;
    transition:all 1s;
}

.logo-header {
    position: absolute;
    top: 40%;
    left: 50%;
    transform: translate(-50%,-50%);
    color: #000000;
    font-family: 'Permanent Marker', cursive; 
}

.logo {
    position: relative;
    display: inline-block; 
    bottom: -20px;
    opacity: 0;
}

.logo.active {
    bottom: 0;
    opacity: 1;
    transition: ease-in-out 1s;
}

.logo.fade {
    bottom: 150px;
    opacity: 0;
    transition: ease-in-out 1s;
}



/* PLAY LINK */
/* Changed the button to a link so I can navigate around my page */

.playLink{
    font-family: 'VT323', monospace;
    position: absolute;
    right: 47%;
    top: 30%;
    color: white;
    height: 50px;
    font-size: 40px;
    font-weight: 900;
}

.playLink::after{
    content: "";
    background: white;
    mix-blend-mode: exclusion;
    width: calc(100% + 20px);
    height: 0;
    position: absolute;
    bottom: -4px;
    left: -10px;
    transition: all .3s cubic-bezier(0.445, 0.05, 0.55, 0.95);
}
  
.playLink:hover::after{
      height: calc(100% + 8px)
  }
  
/* TUTORIAL LINK */
/* Styling my tutorial link */
.tutorialLink{
    font-family: 'VT323', monospace;
    position: absolute;
    right: 45%;
    top: 40%;
    height: 50px;
    font-size: 40px;
    font-weight: 900;
    color: #ffffff;
    }
    
.tutorialLink::before{
content: '';
position: absolute;
bottom: 20%;
right: 0;
width: 0;
height: 2px;
background-color: #ffffff;
transition: width 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

@media (hover: hover) and (pointer: fine) {
.tutorialLink:hover::before{
    left: 0;
    right: auto;
    width: 100%;
    }
}

h3{
    text-decoration: underline;
}

.tutorial{
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(49, 49, 49, 0.7);
    visibility: hidden;
    opacity: 0;
}

.tutorial:target{
    visibility: visible;
    opacity: 1;
}

.tutorialContent{
    position: absolute;
    background: #fff;
    width: 500px;
    max-width: 90%;
    padding: 1em 2em;
    border-radius: 8px;
    font-family: 'Special Elite', cursive;
    top: 30%;
    max-height: 40%;
    overflow-y: auto;
    z-index: 1;
}


.tutorialClose{
    position: absolute;
    top: 0;
    right: 15px;
    color: #585858;
    text-decoration: none;
    font-size: 36px;
}

/* SETTINGS LINK */
.settingsLink{
    font-family: 'VT323', monospace;
    position: absolute;
    right: 45%;
    top: 50%;
    /* width: 15px; */
    height: 50px;
    font-size: 40px;
    font-weight: 900;
    color: #ffffff;
}
    
.settingsLink::before{
    content: '';
    position: absolute;
    bottom: 20%;
    right: 0;
    width: 0;
    height: 2px;
    background-color: #ffffff;
    transition: width 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

@media (hover: hover) and (pointer: fine) {
.settingsLink:hover::before{
    left: 0;
    right: auto;
    width: 100%;
    }
}

/* Settings Box */
.settings{
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(49, 49, 49, 0.7);
    transition: all 0.7s;
    visibility: hidden;
    opacity: 0;
}

.settings:target{
    visibility: visible;
    opacity: 1;
}

.settingsContent{
    position: absolute;
    background: #fff;
    width: 500px;
    max-width: 90%;
    padding: 1em 2em;
    border-radius: 8px;
    font-family: 'Special Elite', cursive;
    top: 30%;
    max-height: 40%;
}


.settingsClose{
    position: absolute;
    top: 0;
    right: 15px;
    color: #585858;
    text-decoration: none;
    font-size: 36px;
}

/* BACKGROUND PARTICLES */
#particles-js {
    width: 100%;
    height: 100vh;
        background-image:
        linear-gradient(rgb(0, 0, 0),
            rgb(0, 0, 0));
    background-position: center;
    background-size: cover;
    z-index: -1;
}

.easyDifficulty{
    position: absolute;
    top: 15%;
    right: 47%;
    font-family: 'Caesar Dressing', cursive;
    font-size: 30px;
}

.mediumDifficulty{
    position: absolute;
    top: 38%;
    right: 41%;
    font-family: 'Caesar Dressing', cursive;
    font-size: 30px;
}

.hardDifficulty{
    position: absolute;
    top: 62%;
    right: 45%;
    font-family: 'Caesar Dressing', cursive;
    font-size: 30px;
}


/* PLAY ONLINE LINK */
.playOnlineButton{
    font-family: 'VT323', monospace;
    position: absolute;
    right: 43%;
    top: 30%;
    /* width: 15px; */
    height: 50px;
    font-size: 40px;
    font-weight: 900;
    color: #ffffff;
    }
    
.playOnlineButton::before{
content: '';
position: absolute;
bottom: 20%;
right: 0;
width: 0;
height: 2px;
background-color: #ffffff;
transition: width 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

@media (hover: hover) and (pointer: fine) {
.playOnlineButton:hover::before{
    left: 0;
    right: auto;
    width: 100%;
    }
}

/* ONE PLAYER LINK */
.onePlayerButton{
    font-family: 'VT323', monospace;
    position: absolute;
    right: 45.5%;
    top: 40%;
    /* width: 15px; */
    height: 50px;
    font-size: 40px;
    font-weight: 900;
    color: #ffffff;
    }
    
.onePlayerButton::before{
content: '';
position: absolute;
bottom: 20%;
right: 0;
width: 0;
height: 2px;
background-color: #ffffff;
transition: width 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

@media (hover: hover) and (pointer: fine) {
.onePlayerButton:hover::before{
    left: 0;
    right: auto;
    width: 100%;
    }
}

/* TWO PLAYER LINK */
.twoPlayerLink{
    font-family: 'VT323', monospace;
    position: absolute;
    right: 45.5%;
    top: 50%;
    height: 50px;
    font-size: 40px;
    font-weight: 900;
    color: #ffffff;
    }

/* .twoPlayerLink{
    font-family: 'VT323', monospace;
    position: absolute;
    right: 37.5%;
    top: 40%;
    height: 50px;
    font-size: 40px;
    font-weight: 900;
    color: #ffffff;
    } */
    
.twoPlayerLink::before{
content: "";
position: absolute;
bottom: 20%;
right: 0;
width: 0;
height: 2px;
background-color: #ffffff;
transition: width 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

@media (hover: hover) and (pointer: fine) {
.twoPlayerLink:hover::before{
    left: 0;
    right: auto;
    width: 100%;
    position: absolute;
    }
}

/* Tutorial Box */





/* Play online box */

.playOnline{
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(49, 49, 49, 0.7);
    transition: all 0.4s;
    visibility: hidden;
    opacity: 0;
    z-index: 1;
}

.playOnline:target{
    visibility: visible;
    opacity: 1;
}

.playOnlineContent{
    position: absolute;
    background: #fff;
    width: 500px;
    height: 200px;
    max-width: 90%;
    padding: 1em 2em;
    border-radius: 8px;
    font-family: 'Special Elite', cursive;
    top: 30%;
    max-height: 40%;
    z-index: 1;
}


.playOnlineClose{
    position: absolute;
    top: 0;
    right: 15px;
    color: #585858;
    text-decoration: none;
    font-size: 36px;
}

.createGameButton{
    position: absolute;
    top: 20%;
    right: 37%;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 25px;
    font-weight: 600;
    font-family: 'Caesar Dressing', cursive;
    text-decoration: underline;
}

.createGameButton:hover{
    transform: translate(0px, -3px);
}

.joinGameButton{
    position: absolute;
    top: 44%;
    right: 15%;
    font-family: 'Caesar Dressing', cursive;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 25px;
    font-weight: 600;
    text-decoration: underline;
}

.joinGameButton:hover{
    transform: translate(0px, -3px);
}

input{
    position: absolute;
    top: 44%;
    right: 40%;
    border-radius: 6px;
    width: 50%;
    height: 15%;
}

/* AI Difficulty Button */

.AIDifficulty{
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(49, 49, 49, 0.7);
    transition: all 0.7s;
    visibility: hidden;
    opacity: 0;
    z-index: 1;
}

.AIDifficulty:target{
    visibility: visible;
    opacity: 1;
}

.AIDifficultyContent{
    position: absolute;
    background: #fff;
    width: 500px;
    height: 200px; 
    max-width: 90%;
    padding: 1em 2em;
    border-radius: 8px;
    font-family: 'Special Elite', cursive;
    top: 40%;
    z-index: 1;
}


.AIDifficultyClose{
    position: absolute;
    top: 0;
    right: 15px;
    color: #585858;
    text-decoration: none;
    font-size: 36px;
}