body {
    font-family:Arial, Helvetica, sans-serif;
}

/********************************************
*
* Header
*
* *******************************************/
header {
    height:50px;
    line-height: 50px;
    box-shadow: inset 0 -1px 0 0 rgba(100,121,143,0.122);
}
.row {
    display: flex;
    justify-content: space-between;
}
.col {
    flex: 50%;
}
.brand {
    margin-left:20px;
}
#savebutton {
    background:#fff;
    border:0;
    cursor: pointer;
    color:rgb(68, 68, 68);
    font-size:20px;
}
#amp_status {
    float:right;
    padding:0 10px;
}
.pass {
    background:green;
    color:#fff;
}
.fail {
    background:red;
    color:#fff;
}

/********************************************
*
* Editor/Preview
*
* *******************************************/
.CodeMirror, #editor, #preview {
    width:50%;
    float:left;
    height:calc(100vh - 50px);
}
.CodeMirror, #preview {
    box-sizing: border-box;
}
#preview {
    border:none;
}

body {
    font-family:Arial, Helvetica, sans-serif;
}

/********************************************
*
* Header
*
* *******************************************/
header {
    height:50px;
    line-height: 50px;
    box-shadow: inset 0 -1px 0 0 rgba(100,121,143,0.122);
}
.row {
    display: flex;
    justify-content: space-between;
}
.col {
    flex: 50%;
}
.brand {
    margin-left:20px;
}
#savebutton {
    background:#fff;
    border:0;
    cursor: pointer;
    color:rgb(68, 68, 68);
    font-size:20px;
}
#savebutton:focus {
    outline:none;
}
#amp_status {
    float:right;
    padding:0 10px;
}
.pass {
    background:green;
    color:#fff;
}
.fail {
    background:red;
    color:#fff;
}

/********************************************
*
* Editor/Preview
*
* *******************************************/
.CodeMirror, #editor, #preview {
    width:50%;
    float:left;
    height:calc(100vh - 50px);
}
.CodeMirror, #preview {
    box-sizing: border-box;
}
#preview {
    border:none;
}

Remove outline on save icon
Remove outline on save icon
