EDIT : there is others post which answers to my post but I let my post online because some people don't know that is about "vertical alignment in flexbox" trick. My topic allow to make a link with it.
I try to make the middle of my sharp match the line of text.
I have try flexbox and even grid but don't figure out what is wrong.
What I want to do :
Here my Jsfiddle, if someone got any idea to make it :
http://jsfiddle.net/rkEMR/10617/
div{ 
display: flex;
  align-items: center;
} #record {
   grid-area: text;
   border: solid;
   border-color: #656666;
   border-width: 1px;
   margin-left: 3.8em;
   margin-top: 0.3em;
   width: 10rem;
   height: 3rem;
   background-color: white;
   font-family: 'Tajawal', sans-serif;
   font-size: 1.5em;
   text-align: center; 
 }
 #circle {
   display: inline-block;
   grid-area: symbol;
   margin: 0;
   padding: 0;
   background: red;
   width: 25px;
   height: 25px;
   text-align: center;
   -webkit-border-radius: 50px;
   -moz-border-radius: 50px;
   border-radius: 50px;
  /* padding-top: 5px;
   line-height:  5em;*/
 }<div> <button id="record"> Record <div id="circle"> </div></button>
</div>
 
    