css

.bbb
    outline: none;
    font-size: 20px;
    position: relative;
    width: 40px;
    height: 40px;
    border: 2px -sharp177CE9 solid;
    background-color: -sharpfff;
    display: inline-block;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    color: -sharp177CE9;
    border-radius: 50%;

html

<button class="bbb type="button"></button>

the computer version looks normal

ios:safari

what"s going on?
it"s all normal on the TV