*{
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
.content{
    margin: 0 auto;
    padding: 40px;
}
.modal{
    z-index: 99;
    display: none;
    height: 100vh;
    position: fixed;
    top: 0;
    width: 100%;
}
.modal__bg{
    background: rgba(0,0,0,0.8);
    height: 100vh;
    position: absolute;
    width: 100%;
}
.modal__content{
    background: #fff;
    left: 50%;
    padding: 20px;
    position: absolute;
    top: 50%;
    transform: translate(-50%,-50%);
    width: 80%;
}