.box {
    padding: 0.75em;
    border-radius: 0.5em;
    border: 2px solid #ddd;
    height: auto;
    margin-bottom: 1em;
    box-shadow: 10px 10px #5a5858;

}

.div1 {
    background-color: silver;
    border-radius: 0.5em;
}

.header {
    text-align: center;
}

.div2 {
    /*    background-color: aquamarine;*/
    animation-delay: 1s;
}

.div3 {
    /*    background-color: aqua;*/
    animation-delay: 2s;
}

.div4 {
    animation-delay: 3s;
}

footer {
    text-align: center;
}



input {
    border: none;
    display: block;
    width: 98.4%;
    line-height: 1.5;
    padding: 8px 0 8px 10px;
    border-bottom: 1px solid #cfcbcc;
    outline: 0;
}

h1,
h2 {
    text-align: center;
    margin-bottom: 0px;
    line-height: 1;
}

h2 {
    color: gray;
}

li {
    display: inline-block;
    width: 200px;
    padding: 0.6rem;
    background: grey;
    border: 4px #2a2a2a solid;
    border-radius: 6px;
    text-align: center;
    font-size: 20px;
    font-weight: bold;
    list-style-type: none;
    margin-left: 10px;
}

.rad {
    margin-left: 75px;
}

.error {
    text-align: center;
    color: red;
    font-weight: 600;
}

.green {
    text-align: center;
    color: green;
    font-weight: 600;
}