Inner border css

div {
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    width: 100px;
    height: 100px;
    border: 20px solid #f00;
    background: #00f;
    margin: 10px;
}

div + div {
    border: 10px solid red;
}

Source: stackoverflow.com

Inner border css

div{
    -webkit-box-shadow:inset 0px 0px 0px 10px #f00;
    -moz-box-shadow:inset 0px 0px 0px 10px #f00;
    box-shadow:inset 0px 0px 0px 10px #f00;
}

Source: stackoverflow.com

Similar codes

2 votes278 views2 answers
No gutter in bootstrap css for row
CSS Bootstrap
30 votes228 views4 answers
Bootstrap media queries
CSS
2 votes245 views1 answer
Onclick javascript are you sure
CSS
56 votes200 views3 answers
Css curved border
CSS
0 vote201 views1 answer
Changer angle div
CSS
198 votes288 views6 answers
How to add css in html
CSS
16 votes225 views2 answers
Css photo circle
CSS
2 votes221 views1 answer
Centering the image
CSS
5 votes235 views1 answer
Transform multiple css
CSS
0 vote231 views1 answer
Css every other element than self
CSS