html - Place circle at middle-right corner of div -


i have been trying place circle, position fixed @ middle of right corner of div.

the problem is: when resize browser, circle changes position. here code:

html:

<!doctype html> <html>     <head>         <title>test</title>         <link rel="stylesheet" type="text/css" href="style.css">     </head>      <body>         <div id="black-box">                     <span class="circle"></span>             </div>     </body> </html>

css:

#black-box {     position: fixed;     width: 28.3%;     left: 0;     top: 0;     bottom: 0;     background: black;     opacity: 0.7;     filter: alpha(opacity=50);     z-index: 3;      -webkit-filter: blur(1px);     -moz-filter: blur(1px);     -o-filter: blur(1px);     -ms-filter: blur(1px);     filter: blur(1px); }  /* "black box" circle */ .circle:before {     position: fixed;     top: 41%;     left: 26.6%;     content: '\25cf';     font-size: 100px;     opacity: 1;     filter: alpha(opacity=100);     color: orange; }

i wish circle, keeps position @ right place, if browser resized.

thanks in advance.

since using percentages widths, change when width of screen changes. instead recommend using widths in pixels. can add media queries change width @ breaking points. ensure circle never moves. see code below:

#black-box {      position: fixed;      width: 420px;      left: 0;      top: 0;      bottom: 0;      background: black;      opacity: 0.7;      filter: alpha(opacity=50);      z-index: 3;        -webkit-filter: blur(1px);      -moz-filter: blur(1px);      -o-filter: blur(1px);      -ms-filter: blur(1px);      filter: blur(1px);  }    /* "black box" circle */  .circle:before {      position: fixed;      top: 50px;      left: 390px;      content: '\25cf';      font-size: 100px;      opacity: 1;      filter: alpha(opacity=100);      color: orange;  }
<!doctype html>  <html>      <head>          <title>test</title>          <link rel="stylesheet" type="text/css" href="style.css">      </head>        <body>          <div id="black-box">                      <span class="circle"></span>              </div>      </body>  </html>


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