*,
:before,
:after {
    box-sizing: border-box;
}

body {
    display: flex;
    align-items: center;
    background: #E3F2FD;
    min-width: 275px;
    height: 100vh;
    margin: 0 10vw;
    overflow: hidden;
    color: #138FF2;
    font-family: Roboto;
}

.wrapper {
    display: flex;
    flex-direction: row;
}

h1 {
    margin: 0;
    font-size: 6em;
    font-weight: 100;
}

p {
    width: 95%;
    font-size: 1.5em;
    line-height: 1.4;
}

.buttons {
    white-space: nowrap;
    display: inline-block;
}

span {
    display: block;
    text-transform: uppercase;
    color: #B9DDFB;
    letter-spacing: 1.5px;
    text-align: center;
}

a {
    display: inline-block;
    padding: .8em 1em;
    margin-right: 1em;
    margin-bottom: 1em;
    border: 3px solid #B9DDFB;
    color: #138FF2;
    font-weight: 500;
    text-transform: uppercase;
    text-decoration: none;
    letter-spacing: .2em;
    position: relative;
    overflow: hidden;
    transition: .3s;

    &:hover {
        color: #E3F2FD;

        &:before {
            top: 0;
        }
    }

    &:before {
        content: '';
        background: #138FF2;
        height: 100%;
        width: 100%;
        position: absolute;
        top: -100%;
        left: 0;
        transition: .3s;
        z-index: -1;
    }
}

// BLACKHOLE
$size: 75px;
$border: $size/15;

.space {
    width: $size;
    height: calc(50vh + #{$size/2});
    border-top-left-radius: $size/2;
    border-top-right-radius: $size/2;
    overflow: hidden;
    margin: calc(50vh - #{$size/2}) auto 0 auto;
    position: relative;
    pointer-events: none;
    -webkit-transform: translateZ(0);
}

.blackhole {
    border: $border solid #1674D1;
    height: $size;
    width: $size;
    border-radius: 50%;
    position: absolute;
    top: 0;
    left: 0;

    &:after {
        content: '';
        height: calc(100% + #{$border*2});
        width: calc(100% + #{$border*2});
        border: $border solid #1674D1;
        border-right-color: transparent;
        border-bottom-color: transparent;
        border-radius: 50%;
        position: absolute;
        top: -$border;
        left: -$border;
        z-index: 5;
        transform: rotate(45deg);
    }
}

@keyframes blackhole {
    to {
        transform: translateY(-100vh);
    }
}

@media (max-width: 600px) {
    body {
        margin: 0 5vw
    }
}