.mb40 {
    margin-bottom: 40px;
}

.mb20 {
    margin-bottom: 20px;
}

.mb10 {
    margin-bottom: 10px;
}

.mb3 {
    margin-bottom: 3px;
}

.mt20 {
    margin-top: 20px;
}

.pointer {
    cursor: pointer;
}

.p0 {
    padding: 0;
}





/* loading */
#loading {
    background: #000;
    background-size: cover;
    width: 100%;
    height: 100%;
    opacity: 0.9;
    z-index: 9999;
    position: fixed;
    left: 0;
    top: 0;
}

.loader {
    position: absolute;
    top: 50%;
    left: 44%;
}

.line {
    animation: expand 1s ease-in-out infinite;
    border-radius: 10px;
    display: inline-block;
    transform-origin: center center;
    margin: 0 3px;
    width: 1px;
    height: 25px;
}

.line:nth-child(1) {
    background: #27ae60;
}

.line:nth-child(2) {
    animation-delay: 180ms;
    background: #f1c40f;
}

.line:nth-child(3) {
    animation-delay: 360ms;
    background: #e67e22;
}

.line:nth-child(4) {
    animation-delay: 540ms;
    background: #2980b9;
}

@keyframes expand {
    0% {
        transform: scale(1);
    }
    25% {
        transform: scale(2);
    }
}

@media screen and (max-width: 767px) {
    /* loading */
    #loading {
        background: #000;
        background-size: cover;
        width: 100%;
        height: 100%;
        opacity: 0.9;
        z-index: 9999;
        position: fixed;
        left: 0;
        top: 0;
    }

    .loader {
        position: absolute;
        top: 50%;
        left: 32%;
    }
}