@mixin container {
width: 100%;
display: inline-block;
margin: 0 auto;
transition: width .1s;
@media (min-width: 640px) {
width: 640px;
}
@media (min-width: 768px) {
width: 768px;
}
@media (min-width: 1024px) {
width: 1024px;
}
@media (min-width: 1280px) {
width: 1280px;
}
@media (min-width: 1536px) {
width: 1536px;
}
}