*{
box-sizing: border-box;
margin: 0;
}
.header{
text-align: center;
padding: 30px;
font-size: 25px;
}
.row{
display: flex;
flex-wrap: wrap;
padding: 0 4px;
}
.column{
flex: 25%;
max-width: 25%;
padding: 0 4px;
}
.column img{
margin-top: 7px;
vertical-align: middle;
}
@media (max-width:1000px){
.column{
flex: 50%;
max-width: 100%;
}
}
@media (max-width:600px){
.column{
flex: 100%;
max-width: 100%;
}
}
