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

html {
    height: 100%;
    font-size: 62.5%;
}

body {
    height: 100%;
    font-family: "Open Sans",sans-serif;
    overflow-x: hidden;
    font-size: 1.5em;
    font-weight: 400;
    line-height: 1.7;
}

h4 {
    font-size: 30px;
    line-height: 1.2;
    margin-bottom: 25px;
    font-family: 'Kalam', cursive;
    text-transform: uppercase;
}

.container {
    display: flex;
    max-width: 1440px;
    margin: 0 auto;
    flex-wrap: wrap;
}

header {
    background-color: #ffd855;
}

    .top {
        display: block;
        height: 450px;
        background-image: url(../images/bg.jpg);
        background-repeat: no-repeat;
        background-position: left top;
        background-size: auto 750px;
        max-width: 1440px;
        margin: 0 auto;
        padding: 25px 0;
    }

        header .top img {
            height: 100%;
            width: auto;
            float: right;
        }

.col {
    padding: 50px 25px;
    /* width: 50%; */
    flex-basis: 50%;
    display: block;
    background-color: #fff;
    outline: 5px #000 dashed;
    position: relative;
}

.yellow {
    background-color: #ffd855;
}
    .yellow::before {
        display: block;
        background-color: #ffd855;
        content: "";
        height: 100%;
        width: 100%;
        position: absolute;
        top: 0;
        left: -100%;
        z-index: -1;
    }
    .rBg::before {
        right: -100%;
        left: auto;
    }

.alert {
    text-align: center;
    padding: 25px;
    display: block;
    color: #fff;
    text-transform: uppercase;
    font-size: 1.8rem;
    font-weight: 400;
    background-color: #000;
    margin-top: 33px;
    border-radius: 55px;
}

footer {
    background-color: #000;
    color: #fff;
    padding: 25px;
}

    .copy {
        line-height: 42px;
        text-transform: uppercase;
    }

    .loga {
        margin-right: 0;
        margin-left: auto;
        display: flex;
    }
        .loga img {
            margin-right: 15px;
            width: 100px;
        }

@media only screen and (max-width: 900px) {
    .container {
        flex-direction: column;
    }
    .col {
        width: 100%;
        flex-basis: 100%;
    }
    .rev {
        display: flex;
        flex-direction: column-reverse;
    }
    .yellow.rBg::before {
        right: 0;
    }

    .top {
        height: 350px;
    }

    header .top img {
        height: auto;
        width: 90%;
        float: right;
        margin: 5% 5% 0 0;
    }

}