.chatSendButton{color: #524E49;
background: #fdeaa8;
padding: 0px;
font-size: 15px;
border-radius: px;
box-shadow: 0px 1px 3px; 
position: relative;
box-sizing: border-box;
transition: all 500ms ease-out;
}.chatSendButton{background-image: url("адрес картинки");
transform-style: preserve-3d; border-radius: 30px 10px 30px 10px;
}
.chatSendButton:after {
top: -50%;
left: 0px;
width: 100%;
position: absolute;
background: #fdeaa8;
border-radius: 50px;
box-shadow: 0px 1px 3px; 
content: 'Кнопка';
transform-origin: left bottom;
transform: rotateX(-190deg);
}.chatSendButton:hover {
transform-origin: center bottom;
transform: rotateX(-190deg) translateY(100%);
}