.osBtns {
    width: 185px;
    float: right;
    margin-left: 30px;
}

.buttons {
    text-align: center;
}
.buttons a:first-of-type {
    margin-bottom: 15px;
}
.buttons a {
    background-color: #1bb24b;
    color: white;
    font-size: 17pt;
    text-decoration: none;
    width: 180px;
    padding: 10px 0;
    border-radius: 16px;
    box-shadow: 6px 5px 10px 0 black;
    transition: .2s;
    display: block;
}
.os {
    margin-top: 20px;
}
.os img {
    display: inline-block;
    vertical-align: middle;
    width: 22px;
}
.os span {
    display: inline-block;
    vertical-align: middle;
    font-size: 12pt;
    margin-left: 10px;
}

@media (max-width: 768px) {
    .osBtns {
        width: 135px;
        margin-left: 15px;
    }
    .buttons a {
        font-size: 12pt;
        width: 135px;
        padding: 7px 0;
        border-radius: 14px;
    }
    .os span {
        font-size: 10pt;
    }
    .os img {
        width: 27px;
    }
}

@media (max-width: 374px) {
    .osBtns {
        margin-left: 5px;
    }
}