.background-dark { 
    background-color: #313131;
}
.div-1 {
        background-color: #f1eccef1;
        height: 40px;
        width: 40px;
        opacity: 0.63;
    }
.center { 
    display: flex;
    justify-content: center;
}

.margin-top {
    margin-top: 30px;
}

.margin-top1{
    margin-top: 10px;
    padding: 0;
}
.margin-top2{
    margin-top: -50px;
    padding: 0;
}

.timer {
    font-size: 60px;
    color: antiquewhite;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.text-box {
    margin-left: 44vw;
	margin-top: 42vh;
}

.btn:link,
.btn:visited {
    text-transform: uppercase;
    text-decoration: none;
    padding: 15px 40px;
    display: inline-block;
    border-radius: 100px;
    transition: all .2s;
    position: absolute;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn:active {
    transform: translateY(-1px);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}

.btn-white {
    background-color: #ffea2e;
    color: #ff4545;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: bold;
}

.btn::after {
    content: "";
    display: inline-block;
    height: 100%;
    width: 100%;
    border-radius: 100px;
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
    transition: all .4s;
}

.btn-white::after {
    background-color: #ee1616;
}

.btn:hover::after {
    transform: scaleX(1.4) scaleY(1.6);
    opacity: 0;
}

.btn-animated {
    animation: moveInBottom 5s ease-out;
    animation-fill-mode: backwards;
}

@keyframes moveInBottom {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }

    100% {
        opacity: 1;
        transform: translateY(0px);
    }
}

input[type="range"] {
  writing-mode: vertical-lr;
  direction: rtl;
  height: 150px;
  width: 30px;
  margin: 0 auto;
  padding: 0;
  background-color: transparent;
  -webkit-appearance: none;
  cursor: pointer;
}
input[type=range]:focus {
  outline: none;
}
input[type=range]::-webkit-slider-runnable-track {
  background: #ff0000;
  border: 0;
  border-radius: 25px;
  width: 100%;
  height: 14.4px;
  cursor: pointer;
}
input[type=range]::-webkit-slider-thumb {
  margin-top: -7.8px;
  width: 30px;
  height: 30px;
  background: rgba(255, 158, 0, 0.6);
  border: 1.8px solid rgba(0, 0, 0, 0.3);
  border-radius: 19px;
  cursor: pointer;
  -webkit-appearance: none;
}
input[type=range]:focus::-webkit-slider-runnable-track {
  background: #ff0000;
}