CSS
.pll-switcher-select {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
background: none;
border: none;
border-width: 0;
outline: none;
box-shadow: none;
margin: 0;
padding: 0;
font: inherit;
color: inherit;
cursor: pointer;
background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cpath d='M317.5 420.1C295.4 465 271.5 480 256 480s-39.4-15-61.5-59.9c-19-38.6-32.1-91.3-34.2-148.1l191.4 0c-2.1 56.8-15.2 109.5-34.2 148.1zM351.7 240l-191.4 0c2.1-56.8 15.2-109.5 34.2-148.1 22.1-44.9 46-59.9 61.5-59.9s39.4 15 61.5 59.9c19 38.6 32.1 91.3 34.2 148.1zm32 32l95.7 0c-6.5 92.5-69.2 169.5-154.2 197.1 33-44.2 55.8-117.8 58.5-197.1zm95.7-32l-95.7 0c-2.7-79.3-25.5-152.9-58.5-197.1 85 27.6 147.7 104.6 154.2 197.1zm-351.2 0l-95.7 0c6.5-92.5 69.2-169.5 154.2-197.1-33 44.2-55.8 117.8-58.5 197.1zM32.6 272l95.7 0c2.7 79.3 25.5 152.9 58.5 197.1-85-27.6-147.7-104.6-154.2-197.1zM256 512a256 256 0 1 0 0-512 256 256 0 1 0 0 512z'/%3E%3C/svg%3E");
background-repeat: no-repeat;
background-position: left center;
background-size: 1em 1em;
padding-left: 1.4em;
}