* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;

    font-family: 'Roboto';
    color: #FFF;
}

body {
    background-color: #121212;
}

/* Texts */

h1 {
    font-size: 64px;
}

h2 {
    font-size: 48px;
}

h3 {
    font-size: 32px;
}

h4 {
    font-size: 24px;
}

p {
    font-size: 16px;
}

@media screen and (max-width: 768px) {
    h1 {
        font-size: 48px;
    }

    h2 {
        font-size: 32px;
    }

    h3 {
        font-size: 24px;
    }

    h4 {
        font-size: 16px;
    }

    p {
        font-size: 12px;
    }
}

.bold {
    font-weight: bold;
}

/* Button */

.button {
    padding: 10px 10px;

    border: none;
    border-radius: 25px;

    cursor: pointer;
}

/* Texts Colors */
.text-color-primary {
    color: #3BBAEB;
}

.text-color-white {
    color: #FFFFFF;
}

/* Backgrounds */

.bg-primary {
    background-color: #121212;
}

.bg-secondary {
    background-color: #282828;
}

.bg-blue {
    background-color: #0486d6;
}

/* Links */

a {
    text-decoration: none;
}

/* Positions */

.pos-abs {
    position: absolute;
}

.pos-rel {
    position: relative;
}

.pos-fixed {
    position: fixed;
}

/* Flexbox */

.flex-row {
    display: flex;
    flex-flow: row nowrap;
}

.flex-col {
    display: flex;
    flex-flow: column nowrap;
}

/* Opacity */

.op-100 {
    opacity: 100%;
}

.op-90 {
    opacity: 90%;
}

.op-80 {
    opacity: 80%;
}

.op-70 {
    opacity: 70%;
}

.op-60 {
    opacity: 60%;
}

.op-50 {
    opacity: 50%;
}

.op-40 {
    opacity: 40%;
}

.op-30 {
    opacity: 30%;
}

.op-20 {
    opacity: 20%;
}

.op-10 {
    opacity: 10%;
}

.op-0 {
    opacity: 0%;
}

/* Misc */

.hidden {
    display: none;
}

/* Main Body */

.main-body {
    width: 100%;
    height: 100%;
}