.datetime-wrapper{
    width: 120px;
    display: inline-block;
}
.datetime{
    display: inline-block;
    text-align: center;
    width: 120px;
    height: 44px;
    margin: 5px;
    padding: 2px;
    padding-left: 5px;
    padding-right: 5px;
    background-color: #333;
    border: 0px;
    border-radius: 3px;
    color: #fff;
    cursor: pointer;
    transition: background-color ease-out 0.15s,
                box-shadow ease-out 0.15s;
}

.datetime:hover{
    background-color: #000;
}


/*thin gray inset shadow:

    box-shadow: #333 1px -1px 3px inset,
                #333 -1px -1px 3px inset,
                #333 -1px 1px 3px inset,
                #333 1px 1px 3px inset;
*/