What is the most effective method to create this style of border using only CSS3?
PS: The width should be 100%, matching the size of the screen.
What is the most effective method to create this style of border using only CSS3?
PS: The width should be 100%, matching the size of the screen.
If you're looking to achieve a similar effect, you can utilize pseudo elements like this:
html,body{
padding:0;
margin:0;
}
body:before{
content:"";
position:absolute;
top:-50%;
height:200px;
width:100%;
background:red;
border-radius:100%
}
body:after{
content:"";
position:absolute;
height:200px;
border-left:2vw solid black;
border-right:2vw solid black;
width:96vw;
}
This approach is based on the concept of:
/----------------\ <-- oval shape
/------------------\
+--------------------+ <--top of screen
|\ /|
| \________________/ |<--screen
By targeting the body element, you can hide the 'upper part' and display:
+--------------------+
|\ /|
| \________________/ |
Additionally, you can use another pseudo element to incorporate the 'black' borders on the left and right sides of the screen.
To achieve a similar appearance, you can utilize the following block of HTML code:
body {
border: 0;
padding: 0;
margin: 0;
}
.content {
width: 100%;
height: 200px;
background-color: green;
border-bottom-right-radius: 50%;
border-bottom-left-radius: 50%;
}
<div class="content">test</div>
Nevertheless, you may notice that the edges are not entirely smooth. To achieve a fully smooth effect, you will have to increase the width of the div beyond 100%, position it at left: 0, and conceal any content that extends beyond 100% width to eliminate the horizontal scrollbar.
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