style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'PT Sans', sans-serif;
    text-align: center;
    user-select: none;
}
.container{
    max-width: 700px;
    margin: auto;
}
.mb-5{
    margin-bottom: 100px;
}
#header_title{
    color: #32BECE;
    margin: 20px 0px;
    font-size: 2.8rem;
    text-transform: uppercase;
}
.btn{
    width: 100%;
    padding: 10px;
    font-size:1rem;
    margin: 30px 0px;
}
.cover{
   position: relative;
}
.alert{
    background-color: rgb(250, 115, 115);
    padding: 10px 30px;
    border-radius: 2px;
    color: rgb(255, 255, 255);
    font-weight: bold;
    position: absolute;
    left: 50%;
    top: 32%;
    transform: translateX(-50%);
    transition: .3s;
    z-index: -1;
}
input.btn{
    font-size: 1.5rem;
    letter-spacing: 10px;
    caret-color: #32BECE;
    color: #32BECE;
    z-index: 2;
}
input.btn:focus {
    outline-color: #32BECE;
    box-shadow: 0 0 3px 0 #32BECE;
  }
::-webkit-input-placeholder{
    letter-spacing: normal;
}
select.btn{
    width: 47%;
    margin:10px 0px;
}
button.btn{
    background-color: #32BECE;
    border: none;
    box-shadow: 0 0 5px 0 gray;
    color: #fff;
    font-weight: bold;
    cursor: pointer;
    border-radius: 5px;
    outline: none;
    font-size: 1.2rem;
    letter-spacing: 3px;
    transition: .3s;
}
button.btn:hover{
    background-color: #8deaf7;
    box-shadow: 0 0 10px 0 rgb(53, 53, 53);
}
small{
    font-size: 1.3rem;
}
h2#result{
    margin: 40px 0px;
    color: #32BECE;
    font-size: 3rem;
}

#copy_button{
    cursor: pointer;
}
.btn_footer{
    margin: 0;
    background-color: rgba(255, 0, 0, 0.582);
    color: #fff;
    font-weight: bold;
    border: none;
    box-shadow: 0 0 5px 0 black;
    font-size: 1rem;
    padding: 10px 45px;
    cursor: pointer;
    transition: .3s;
    outline: none;
}
.btn_footer:hover{
    background-color: #8deaf7;
    box-shadow: 0 0 10px 0 rgb(53, 53, 53);
}

/*Historey Work Here*/
.historey{
    border: 1px solid;
    max-width: 700px;
    margin: auto;
}
.historey h1{
    text-transform: uppercase;
    margin: 10px 0px;
}
.table {
    width: 100%;
    border-collapse: collapse;
    background-color: rgba(0, 0, 0, 0.075);
  }
 .thead-dark th {
    color: #fff;
    background-color: #32BECE;
    border-color: #32BECE;
    text-transform: uppercase;
  }
  .table-bordered th,
  .table-bordered td {
    border: 1px solid #dee2e6;
    padding: 0.75rem;
  }
  .table tbody tr:hover {
    background-color: rgba(50, 190, 206, 0.13);
    cursor: pointer;
 }
/*Dark ON/Off Button*/
  .label {
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    color: #394a56;
    position: fixed;
    right: 20px;
  }
  .toggle {
    isolation: isolate;
    position: relative;
    height: 30px;
    width: 60px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow:
      -8px -4px 8px 0px #ffffff,
      8px 4px 12px 0px #d1d9e6,
      4px 4px 4px 0px #d1d9e6 inset,
      -4px -4px 4px 0px #ffffff inset;
  }
  
  .toggle-state {
    display: none;
  }
  
  .indicator {
    height: 100%;
    width: 200%;
    background: #32BECE;
    border-radius: 15px;
    transform: translate3d(-75%, 0, 0);
    transition: transform 0.4s cubic-bezier(0.85, 0.05, 0.18, 1.35);
    box-shadow:
      -8px -4px 8px 0px #ffffff,
      8px 4px 12px 0px #d1d9e6;
  }
  @keyframes shake {
    0%, 100% {
      transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
      transform: translateX(-10px);
    }
    20%, 40%, 60%, 80% {
      transform: translateX(10px);
    }
  }
  .shake {
    animation-name: shake;
    animation-duration: 0.15s;
    animation-iteration-count: 5;
  }

/*Responsive */
@media only screen and (max-width: 549px) {
 .alert{
  padding: 10px 0px;
  width: 80%;
 }
small{
  display: block;
}
#header_title{
  font-size: 2rem;
}
select.btn {
  width: 86%;
}
.btn {
  width: 89%;
}

}