.class1{
    display: block;
    margin: auto;
    width: 850px;
}

.class2{
    display: block;
    margin: auto;
    width: 500px;
}

.mark1{
    background: linear-gradient(transparent 0%, pink 20%);
}

.mark2{
    background: linear-gradient(transparent 0%, #ffff33 20%);
}


