* {
    margin: 0;
    padding: 0;
}

body,
html, #app {
    width: 100%;
    height: 100%;
}



.loading-screen {
    width: 100%;
    height: 100%;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading span {
    display: inline-block;
    width: 8px;
    height: 100%;
    border-radius: 4px;
    background: lightgreen;
    -webkit-animation: loadsaven 1.04s ease infinite;
}

@-webkit-keyframes loadsaven {

    0%,
    100% {
        height: 40px;
        background: #0f87e4;
    }

    50% {
        height: 60px;
        margin-top: -20px;
        background: #626f7a;
    }
}

.loading span:nth-child(2) {
    -webkit-animation-delay: 0.13s;
}

.loading span:nth-child(3) {
    -webkit-animation-delay: 0.26s;
}

.loading span:nth-child(4) {
    -webkit-animation-delay: 0.39s;
}

.loading span:nth-child(5) {
    -webkit-animation-delay: 0.52s;
}