body {
    padding-top: 5rem;
}

.footer > .container {
    padding-right: 15px;
    padding-left: 15px;
}

code {
    font-size: 80%;
}

.box {
    width: 100%;
    height: auto;
    position: relative;
    border: 1px solid #bbb;
    // background:#eee;
}

.ribbon {
    position: absolute;
    right: -5px;
    top: -5px;
    z-index: 1;
    overflow: hidden;
    width: 75px;
    height: 75px;
    text-align: center;
}
.ribbon span {
    font-size: 9px;
    color: #fff;
    text-transform: uppercase;
    text-align: center;
    font-weight: bold;
    line-height: 20px;
    transform: rotate(45deg);
    -webkit-transform: rotate(45deg); /* Needed for Safari */
    width: 100px;
    display: block;
    background: #79a70a;
    background: linear-gradient(#9bc90d 0%, #79a70a 100%);
    box-shadow: 0 3px 10px -5px rgba(0, 0, 0, 1);
    position: absolute;
    top: 19px;
    right: -21px;
}
.ribbon span::before {
    content: "";
    position: absolute;
    left: 0px;
    top: 100%;
    z-index: -1;
    border-left: 3px solid #79a70a;
    border-right: 3px solid transparent;
    border-bottom: 3px solid transparent;
    border-top: 3px solid #79a70a;
}
.ribbon span::after {
    content: "";
    position: absolute;
    right: 0%;
    top: 100%;
    z-index: -1;
    border-right: 3px solid #79a70a;
    border-left: 3px solid transparent;
    border-bottom: 3px solid transparent;
    border-top: 3px solid #79a70a;
}

.red span {
    background: linear-gradient(#f70505 0%, #8f0808 100%);
}
.red span::before {
    border-left-color: #8f0808;
    border-top-color: #8f0808;
}
.red span::after {
    border-right-color: #8f0808;
    border-top-color: #8f0808;
}

.blue span {
    background: linear-gradient(#2989d8 0%, #1e5799 100%);
}
.blue span::before {
    border-left-color: #1e5799;
    border-top-color: #1e5799;
}
.blue span::after {
    border-right-color: #1e5799;
    border-top-color: #1e5799;
}