.btn-loading{
    pointer-events: none;
}
.btn-loading i{
    -webkit-animation: fa-spin 2s infinite linear;
    animation: fa-spin 2s infinite linear;
    display: inline-block;
    font: normal normal normal 14px/1 FontAwesome;
    font-size: inherit;
    text-rendering: auto;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    width: 16px;
    height: 16px;
    padding: 2px;
    line-height: 14px;
}
.btn-loading i:before {
    content: "\f110";
}

.text-2-line,.text-3-line,.text-4-line{
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box !important;
    line-height: 1.3rem !important;
    -webkit-box-orient: vertical;
}

.text-2-line {
    max-height: 2.6rem;
    -webkit-line-clamp: 2;
}

.text-3-line {
    max-height: 3.9rem;      /* fallback */
    -webkit-line-clamp: 3; 
}

.text-4-line {
    max-height: 5.2rem;      /* fallback */
    -webkit-line-clamp: 4; 
}
.no-select {
    -webkit-touch-callout: none; /* iOS Safari */
    -webkit-user-select: none; /* Safari */
    -khtml-user-select: none; /* Konqueror HTML */
    -moz-user-select: none; /* Old versions of Firefox */
    -ms-user-select: none; /* Internet Explorer/Edge */
    user-select: none; /* Non-prefixed version, currently
                          supported by Chrome, Edge, Opera and Firefox */
}

/* common */
.ribbon {
    width: 150px;
    height: 150px;
    overflow: hidden;
    position: absolute;
    z-index: 1;
}
.ribbon::before,
.ribbon::after {
    position: absolute;
    z-index: -1;
    content: '';
    display: block;
    border: 5px solid #c3c3c3;
}
.ribbon span {
    position: absolute;
    display: block;
    width: 180px;
    padding: 5px 0;
    background-color: #3498db;
    box-shadow: 0 5px 10px rgb(0 0 0 / 10%);
    color: #fff;
    font: 700 11px/1 'Lato', sans-serif;
    text-shadow: 0 1px 1px rgb(0 0 0 / 20%);
    text-transform: uppercase;
    text-align: center;
}

/* top left*/
.ribbon-top-left {
    top: -10px;
    left: -10px;
}
.ribbon-top-left::before,
.ribbon-top-left::after {
    border-top-color: transparent;
    border-left-color: transparent;
}
.ribbon-top-left::before {
    top: 0;
    right: 75px;
}
.ribbon-top-left::after {
    bottom: 75px;
    left: 0;
}
.ribbon-top-left span {
    right: 30px;
    top: 20px;
    transform: rotate(-45deg);
}

/* top right*/
.ribbon-top-right {
    top: -10px;
    right: -10px;
}
.ribbon-top-right::before,
.ribbon-top-right::after {
    border-top-color: transparent;
    border-right-color: transparent;
}
.ribbon-top-right::before {
    top: 0;
    left: 0;
}
.ribbon-top-right::after {
    bottom: 0;
    right: 0;
}
.ribbon-top-right span {
    left: -25px;
    top: 30px;
    transform: rotate(45deg);
}

/* bottom left*/
.ribbon-bottom-left {
    bottom: -10px;
    left: -10px;
}
.ribbon-bottom-left::before,
.ribbon-bottom-left::after {
    border-bottom-color: transparent;
    border-left-color: transparent;
}
.ribbon-bottom-left::before {
    bottom: 0;
    right: 0;
}
.ribbon-bottom-left::after {
    top: 0;
    left: 0;
}
.ribbon-bottom-left span {
    right: -25px;
    bottom: 30px;
    transform: rotate(225deg);
}

/* bottom right*/
.ribbon-bottom-right {
    bottom: -10px;
    right: -10px;
}
.ribbon-bottom-right::before,
.ribbon-bottom-right::after {
    border-bottom-color: transparent;
    border-right-color: transparent;
}
.ribbon-bottom-right::before {
    bottom: 0;
    left: 0;
}
.ribbon-bottom-right::after {
    top: 0;
    right: 0;
}
.ribbon-bottom-right span {
    left: -25px;
    bottom: 30px;
    transform: rotate(-225deg);
}