/* Small devices */
@media screen and (max-width: 740px) {
    .logo {
        text-align: center;
        margin: 2.5em 0 0 0;
        width: 100%;
        padding: 0;
    }

    .btn,
    .main,
    .aside,
    .main .input,
    .main .buttons {
        width: 100%;
    }

    .main textarea {
        min-height: 250px;
    }

    .main .buttons {
        margin: 1rem auto 0;
    }

    .main .buttons button {
        margin: 0.2rem 0;
    }

    .warning {
        margin: 0 0 0.5rem 2.3rem;
        font-size: 14px;
    }

    .flex-center {
        display: block;
    }

    .aside .aside-box {
        position: static;
        min-height: 200px;
        padding: 16px 32px 32px;
    }

    #not-found img {
        visibility: hidden;
        display: none;
    }

    footer .footer {
        background-image: none;
        background: #d8dfe8;
    }

    footer .col {
        flex: auto;
    }

    footer .footer p,
    footer .footer a,
    footer .footer a:visited,
    footer .footer a:active {
        font-size: 14px;
    }
}

/* Medium devices */
@media screen and (min-width: 768px) and (max-width: 1368px) {
    .main {
        width: 70%;
    }

    .aside {
        width: 30%;
    }

    .aside-box {
        padding: 0 1.5rem;
        top: -4rem;
    }

    .main .input,
    .main .buttons {
        width: 65%;
    }

    .main .buttons button {
        margin: 0 0.1rem;
    }

    .warning {
        font-size: 13px;
        margin: 0 0 1em 4em;
    }
}