a,
button,
input {
    -webkit-tap-highlight-color: rgba(255, 0, 0, 0);
}

span {
        height: 0px;
        width: 0px;
        border-top: 5px solid #006633;
        border-left: 5px solid transparent;
        border-right: 5px solid transparent;
    }

border:none;

background:none;

box-shadow:none;