body {
    background-color: mistyrose;
}
ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: crimson;
}

li {
    float: left;
}

li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

li a:hover {
    background-color: #111;
}
 {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial;
}

.header {
    text-align: center;
    padding: 32px;
}
.row {
    display: -ms-flexbox; 
    display: flex;
    -ms-flex-wrap: wrap; 
    flex-wrap: wrap;
    padding: 0 4px;
}

.column {
    -ms-flex: 30%;
    flex: 30%;
    max-width: 30%;
    padding: 0 8px;
}

.column img {
    margin-top: 12px;
    vertical-align: middle;
}

@media screen and (max-width: 1000px) {
    .column {
        -ms-flex: 60%;
        flex: 60%;
        max-width: 60%;
    }
}
@media screen and (max-width: 1000px) {
    .column {
        -ms-flex: 100%;
        flex: 100%;
        max-width: 100%;
    }
}
.footer {
    background-color: black;
    padding: 10px;
    text-align: center;
}
div1 {
    width: 500px;
    padding: 10px;
    border: 6px solid crimson;
    margin:20;
    background-color: crimson;
}