style.css

body,
html {
    margin: 0;
    padding: 0;
}
header {
    display: flex;
    flex-direction: row;
    background-color: purple;
    
    position: relative;
}
.ball {
    position: absolute;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    left: -10%;
    background-color: rgb(9, 245, 131);
    transition: 5s ease-in-out;
  } 
header:hover .ball{
    background-color: rgb(255, 221, 0);
    transform: translate(1200px,200px) rotate(360deg);
    border-radius: 2px;
    transition: 5s ease-in-out;
    
}
header nav {
    align-items: center;
    display: flex;
}
header nav ul {
    display: flex;
    flex-direction: row;
    
}
header nav ul li {
    list-style: none;
    margin-left: 30px;
}
header nav ul li a {
    text-decoration: none;
    color: #fff;
    font-size: larger;
    font-weight: 900;
    transition: 3s ease-in-out;
}
header nav ul li a:hover{
    letter-spacing: 2px;
    transform:translate(4px,6px) scale(110%) rotate(30deg);
    transition: 1s ease-in-out;
}
header nav ul li button {
    color: black;
    background-color: white;
    border: none;
    outline: none;
    border-radius: 12px;
    height: 30px;
    padding: 6px 10px;
    font-weight: bold;
    transition: 2s;
    
} 
header nav ul li button:hover {
    background-color: orangered ;
    transition-delay: .1s;
    letter-spacing: 3px;
    font-size: larger;
    font-weight: bolder;
    height:auto;
    padding: 9px 12px;
    transform: rotate(-1080deg);

    transition: 2s;
}
.sqr {
    height: 100px;
    width: 100px;
    background-color: blue;
    /* display: flex; */
    transition: 2s;
}
.sqr p {
    visibility: hidden;
    display: inline;
}
.in {
    height: 100px;
    width: 100px;
    background-color: blue;
    transition: 4s;
    align-items: center;
    justify-content: center;
    display: flex;
}
.sqr:hover .in{
    top: 50%;
    left: 50%;
    height: 150px;
    width: 150px;
    background-color: darkviolet;
    transform: translate(300px,200px) scale(90%) rotate(720deg);
    border-radius: 50%;
    transition: 4s;
}
.sqr:hover .p {
    visibility: visible;
    transition: 4s;
    text-align: center;
    align-items: center;
}
.audio {
    margin-top: 120px;
    display: flex;
    flex-direction: row;
}