<svg class="icon  icon--plus" viewBox="0 0 5 5" xmlns="http://www.w3.org/2000/svg">
    <path d="M2 1 h1 v1 h1 v1 h-1 v1 h-1 v-1 h-1 v-1 h1 z" />
</svg>
.icon {
    display: inline-block;
    vertical-align: middle;
}

.icon--plus {
    background-color: cornflowerblue;
}

.icon--plus > path {
    fill: gold;
    stroke: gold;
    stroke-width: 0.1;
    stroke-linejoin: round;
}

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