border-box css
#example1 { box-sizing: border-box; }
css box-sizing
/* Always keep this code inside your css file*/ *{ box-sizing: border-box; } .div-1{ /* width: 100%; Default - Block Element*/ padding: 10px; box-sizing: border-box; /* content-box is default for box-sizing content-box will remove border-box effect. */ } /* after applying padding [border also will increase the width] 10px added to left and right from padding the .div-1 width is now 100% + 20px, and that may cause errors in your layout according to your work. to solve the problem and force the width to be as i give to it we use box-sizing => our div width will not be affected by padding or border */
html box
<!DOCTYPE html> <html> <head> <title>Page Title</title> </head> <body> <style> .box { height:5px; width:5px; background-color:blue; padding-top: 30px; padding-right: 30px; padding-bottom: 30px; padding-left: 30px; color:blue; border-width: 15px 15px 15px 15px; border-color: blue; border-style: solid; border-radius: 70% outline-color: blue; margin-top: 10px; margin-bottom: 10px; margin-right: 10px; margin-left: 10px; } </style> <div class="box"> <h1 style="color:black;position:absolute;font-family:helvetical;font-size:20px;left:20px;bottom:325px;">Your Text</h1> </div> </body> </html>
how to style rule to apply the Border Box model css
header, ul, nav, li, a /* other elements */{ display: block; -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box;
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