style.css

*{
    padding: 0;
    margin: 0;
}

body{
    color: #FFF;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #1E1F23;
}

.product{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);

    width: 300px;
    height: 400px;
    background-color: #FFF;
    border-radius: 5px;
    overflow: hidden;
}

.product .imagebox{
    height: 100%;
    box-sizing: border-box;
}

.product .imagebox img{
    display: block;
    width: 80%;
    margin: 10px auto 0;
}

.specs{
    position: absolute;
    width: 100%;
    bottom: -140px;
    background-color: #FFF;
    padding: 10px;
    box-sizing: border-box;
    color: #000;
    transition: .5s;
}

.specs:hover{
    bottom: 0;
}

.specs h2{
    font-size: 25px;
    width: 100%;
}

.specs h2 span{
    font-size: 18px;
    color: #808080;
    font-weight: normal;
}

.specs .price{
    position: absolute;
    top: 12px;
    right: 25px;
    font-weight: bold;
    font-size: 30px;
}

label{
    display: block;
    margin-top: 5px;
    font-weight: bold;
    font-size: 15px;
}

ul{
    display: flex;
}

ul li {
    width: 50px;
    height: 20px;
    list-style: none;
    margin: 5px 5px 0;
    font-size: 15px;
    color: #808080;
    text-align: center;
    cursor: pointer;
    transition: color 0.5s;
}

ul li:hover{
    color: #000;
}

ul li:first-child{
    margin-left: 0;
}

ul.color li{
    width: 50px;
    height: 20px;
}

ul.color li:nth-child(1){
    background-color: #FF0;
}
ul.color li:nth-child(2){
    background-color: #000;
}
ul.color li:nth-child(3){
    background-color: #F00;
}
ul.color li:nth-child(4){
    background-color: #00F;
}
ul.color li:nth-child(5){
    background-color: #F0F;
}

a{
    display: block;
    padding: 5px;
    color: #FFF;
    margin: 10px 0 0;
    background-color: #48a519;
    text-align: center;
    text-decoration: none;
    border-radius: 8px;
    cursor: pointer;
    transition: .2s;
}

a:hover{
    background-color: #5ebf31;
    color: #000;
}