styles.css

:root {
    --neon: 168, 127, 248;
}

h1 {
    margin: .5em 0 .5em
}

.inner hr {
    margin: .5em 0 .5em
}

s {
    color: gray;
}

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

body {
    font-family: "Montserrat", sans-serif;
    background: #0f0f0f;
    width: 100%;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

h1 {
    font-size: 40px;
    text-align: center;
}

h4 {
    margin: 1em;
}

button {
    padding: 1.3em 3em;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    font-weight: 500;
    color: #000;
    background-color: #fff;
    border: none;
    border-radius: 45px;
    -webkit-box-shadow: 0px 8px 15px rgba(0, 0, 0, 0.1);
    box-shadow: 0px 8px 15px rgba(0, 0, 0, 0.1);
    -webkit-transition: all 0.3s ease 0s;
    transition: all 0.3s ease 0s;
    cursor: pointer;
    outline: none;
}

button:hover {
    background-color: rgb(var(--neon));
    -webkit-box-shadow: 0px 15px 20px rgba(var(--neon), 0.4);
    box-shadow: 0px 15px 20px rgba(var(--neon), 0.4);
    ;
    color: #fff;
    -webkit-transform: translateY(-7px);
    -ms-transform: translateY(-7px);
    transform: translateY(-7px);
}

button:active {
    -webkit-transform: translateY(-1px);
    -ms-transform: translateY(-1px);
    transform: translateY(-1px);
}

#icons01 button {
    padding: 0;
    width: 4em;
    height: 4em;
    border-radius: 100%;
    background-color: #0f0f0f;
}

#more-btn {
    margin: 1em 0 0;
    transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease;
}

.inner>p span {
    font-weight: 600;
}