Could you please provide some guidance on creating a button design similar to this one? I've made progress with the code shown below, but still need to make adjustments like changing the font.
<!DOCTYPE html>
<html>
<head>
<style>
.button {
-webkit-text-size-adjust: 100%;
-webkit-tap-highlight-color: rgba(0,0,0,0);
--antd-wave-shadow-color: #1890ff;
--scroll-bar: 0;
font-feature-settings: "tnum","tnum";
-webkit-font-smoothing: antialiased;
box-sizing: border-box;
margin: 0;
overflow: visible;
text-transform: none;
font: 16px/1.4 Sen,sans-serif;
line-height: 1.5715;
display: inline-block;
white-space: nowrap;
text-align: center;
cursor: pointer;
transition: all .3s cubic-bezier(.645,.045,.355,1);
user-select: none;
touch-action: manipulation;
border: 1px solid #d9d9d9;
outline: 0;
border-color: #1890ff;
text-shadow: 0 -1px 0 rgba(0,0,0,.12);
box-shadow: 0 2px 0 rgba(0,0,0,.045);
-webkit-appearance: button;
padding: 6.4px 20px;
border-radius: 40px;
width: 230px;
height: 68px;
font-size: 18px;
color: #fff;
font-weight: 700;
background: #5675ff;
font-family: RobotoBold3;
position: relative;
margin-right: 20px;
}
</style>
</head>
<body>
<button class="button">BUY X </button>
</body>
</html>