SmartHomePHP/web/css/panel.css

body {
    opacity: 0;
    transition: 0.3s;
}

body.loaded {
    opacity: 1;
}

/* Linear loader */
.linear-loader {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    overflow: hidden;
    width: 100%;
    height: 4px;
    background-color: #B3E5FC;
    z-index: 500;
}

.indeterminate {
    position: relative;
    width: 100%;
    height: 100%;
}

.indeterminate:before {
    content: '';
    position: absolute;
    height: 100%;
    background-color: #03A9F4;
    animation: indeterminate_first 3s infinite ease-out;
}

.indeterminate:after {
    content: '';
    position: absolute;
    height: 100%;
    background-color: #4FC3F7;
    animation: indeterminate_second 3s infinite ease-in;
}

@keyframes indeterminate_first {
    0% {
        left: -100%;
        width: 100%;
    }
    100% {
        left: 100%;
        width: 10%;
    }
}

@keyframes indeterminate_second {
    0% {
        left: -150%;
        width: 100%;
    }
    100% {
        left: 100%;
        width: 10%;
    }
}

/* Content loader */
#loader {
    position: relative;
}

.loader-icon {
    background: #2f2f2f;
    border-radius: 100%;
    height: 150px;
    width: 150px;
    margin: 100px auto 30px;
    color: #fff;
    text-align: center;
    line-height: 150px;
    font-size: 100px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.loader-brand {
    text-align: center;
    font-size: 40px;
}

.loader-message {
    opacity: 0;
    text-align: center;
    font-size: 18px;
    position: absolute;
    left: calc(50% - 15px);
    top: 125px;
    background: #F44336;
    border-radius: 50px;
    padding: 0 10px;
    color: #fff;
    box-shadow: 0 0 10px #f44336;
    width: 100px;
    transition: 0.8s;
}

#loader.error .loader-message {
    opacity: 1;
}

.control-panel {
    display: none;
}