.box1 {background-color:#f5f7f9;border: 1px solid #e6ecf1;padding:1.25rem;border-radius:.25rem;}

.media-align-right {
    text-align: right;
    min-width: 33%;
}
.media-align-left {
    text-align: left;
    min-width: 33%;
}
.media-align-center {
    text-align: center;
    min-width: 33%;
}
@media only screen and (max-width: 600px) {
    .media-align-right {
        text-align: center;
        min-width: 300px;
    }
    .media-align-left {
        text-align: center;
        min-width: 300px;
    }
    .media-align-center {
        text-align: center;
        min-width: 300px;
    }

}