.zm-btn {
    background: #fafafa;
    background-image: linear-gradient(to bottom, #fafafa, #f2f2f2);
    border-radius: 3px;
    color: inherit;
    padding: 0.25rem 0.75rem;
    border: solid #ccc 1px;
    text-decoration: none;
    display: inline-block;
    cursor: default;
    align-items: center;
    line-height: 1.5rem;
    box-sizing: border-box;
    display: flex;
    justify-content: center;
}
.zm-btn:focus,
.zm-btn:hover {
    border-color: #999;
}
.zm-btn.active {
    color: #75a9f9;
}
.zm-btn.active,
.zm-btn:focus,
.zm-btn:active {
    background: #f2f2f2;
    background-image: linear-gradient(to bottom, #f2f2f2, #fafafa);
}
.zm-btn[disabled] {
    opacity: 0.333;
    pointer-events: none;
}
.zm-btn.zm-btn-warning:not([disabled]) {
    background: #ffa66a; /* Old browsers */
    background: linear-gradient(to bottom, #ffa66a 0%,#ff9047 100%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
    color: white;
    border-color: #DD833E;
}
.zm-btn.zm-btn-warning:not([disabled]).active,
.zm-btn.zm-btn-warning:not([disabled]):focus,
.zm-btn.zm-btn-warning:not([disabled]):active {
    background: #ff9047; /* Old browsers */
    background: linear-gradient(to bottom, #ff9047 0%,#ffa66a 100%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
}
.zm-btn.zm-btn-warning:active:not([disabled]),
.zm-btn.zm-btn-warning:focus:not([disabled]),
.zm-btn.zm-btn-warning:hover:not([disabled]) {
    border-color: #962D00;
}
.zm-btn.zm-btn-primary:not([disabled]) {
    background: linear-gradient(to bottom, #00e5ff 0%,#00b7ef 100%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
    border-color: #0096E8;
    color: white;
}
.zm-btn.zm-btn-primary.active:not([disabled])
.zm-btn.zm-btn-primary:active:not([disabled]),
.zm-btn.zm-btn-primary:focus:not([disabled]),
.zm-btn.zm-btn-primary:hover:not([disabled]) {
    border-color: #0047AA;
}
.zm-btn.zm-btn-primary.active:not([disabled]),
.zm-btn.zm-btn-primary:active:not([disabled]),
.zm-btn.zm-btn-primary:focus:not([disabled]) {
    background: linear-gradient(to bottom, #00b7ef 0%, #00e5ff 100%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
}