/* Extra small devices (phones, less than 768px) */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body { font-family:'Roboto'; line-height:1.6; background-color:#ECF0F1}

.header {
    height: 100px;
    background-color: #666;
}

.container {
    padding: 20px 15px;
}

.left {
    padding-top: 20px;
}

.footer {
    height: 100px;
    background-color: #666;
}

.sidebar-box {
    margin-top: 200px;
    margin-bottom: 20px;
    padding: 5px 10px;
    border: 3px solid #C0392B;
    min-height:250px;
    background-color:#E74C3C;
    color:#fff;
    text-align:center;
    line-height:250px;
}

p {
    margin-bottom: 20px;
}

/* Small devices (tablets, 768px and up) */
@media only screen and (min-width: 768px) {
    .wrapper {
        width: 720px;
        margin: 0 auto;
    }

    .header {
        height: 200px;
    }

    .container {
        padding: 0;
    }

    .left,
    .main {
        float: left;
    }

    .left {
        width: 25%;
        padding-right: 20px;
    }

    .main {
        width: 75%;
        border-left: 1px solid #666;
        padding-top: 20px;
        padding-left: 20px;
    }

    .footer {
        clear: both;
        height: 300px;
    }
}

/* Medium devices (desktops, 992px and up) */
@media only screen and (min-width: 992px) {
    .wrapper {
        width: 940px;
    }

    .header {
        height: 300px;
    }

    .footer {
        height: 600px;
    }
}

/* Large devices (large desktops, 1200px and up) */
@media only screen and (min-width: 1200px) {
    .wrapper {
        width: 1140px;
    }

    .footer {
        height: 1000px;
    }
}