a.air-download-attachments-button {
    padding: 12px 20px;
    font-size: 13px;
    line-height: 18px;
    background-color: #2196f3;
    color: #fff;
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    outline: none;
    border-width: 0;
    border-style: solid;
    border-color: transparent;
    border-radius: 0.4em;
    box-shadow: none;
    vertical-align: middle;
    text-align: center;
    text-decoration: none;
    text-transform: uppercase;
    text-shadow: none;
    font-weight: 600;
    cursor: pointer;
    transition: color .25s ease, background-color .25s ease, border-color .25s ease, box-shadow .25s ease, opacity .25s ease;
}

a.air-download-attachments-button:hover {
    background-color: #1976d2;
    color: #fff;
}

a.air-download-attachments-button:active {
    background-color: #1565c0;
}

a.air-download-attachments-button:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.5);
}