styles.css

* {
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}

body,
html {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    background: rgba(8, 8, 168, 0.2);
    overflow: hidden;
    font-family: 'Arsenal', sans-serif;
}

.container {
    width: 400px;
    height: 400px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    justify-content: center;
    align-items: center;
}

.center {
    width: 180px;
    height: 60px;
    position: absolute;
}

.btn {
    width: 180px;
    height: 60px;
    cursor: pointer;
    background: transparent;
    border: 1px solid #91C9FF;
    outline: none;
    transition: 1s ease-in-out;
}

svg {
    position: absolute;
    left: 0;
    top: 0;
    fill: none;
    stroke: #fff;
    stroke-dasharray: 150 480;
    stroke-dashoffset: 150;
    transition: 1s ease-in-out;
}

.btn:hover {
    transition: 1s ease-in-out;
    background: #4F95DA;
}

.btn:hover svg {
    stroke-dashoffset: -480;
}

.btn span {
    color: rgba(8, 8, 168, 0.7);
    font-size: 18px;
    font-weight: 100;
}

.success-message {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #4CAF50;
    color: white;
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    z-index: 999;
}