:root {
    --primary: #3e363f;
    --secondary: rgba(255,255,255, .5);
    --accent: #128D7F;
  } 
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;  
}
body .container {
    height: 100vh;
    min-height: 100vh;
    background-color: rgba(0, 100, 0, 0.1);
    width: 100vw;
}
header {
    display: flex;
    justify-content: space-between;
    min-height: 10vh;
    padding: 1rem;
    background: var(--secondary);
}
header .logo img {
    display: block;
    height: 40px;
}
.icon {
    color: var(--accent);
    cursor: pointer;
}
header nav {
    display: flex;
    flex-direction: column;
    align-items: end;
    gap: 1rem;
}

header nav ul {
    display: flex;
    flex-direction: column;
    display: none;
}

header nav ul li {
    list-style: none;
    padding-bottom: 2rem;
}

header nav ul li a {
    text-decoration: none;
    color: var(--accent);
    font-size: 1.1rem;
    text-transform: uppercase;
    font-family: sans-serif;
    letter-spacing: 1px;
    padding: 0.6rem;
    transition: 0.4s;
    border-radius: 10px;
}
header nav ul li a:hover, header nav ul li .active {
    background-color: var(--accent);
    color: white;
    transform: translate(0.4s)
}

main {
    color: var(--primary);
    margin-top: 10rem;  
    width: 100%;
    padding: 1rem;
}
main .img {
    display: none;
}

main .text h1 {
    font-size: 2rem;
    font-family: sans-serif;
    letter-spacing: .3rem;
}
main .text h4 {
    text-transform: uppercase;
    letter-spacing: .5rem;
    margin-bottom: 3rem;
}
main .text p {
    font-size: 2rem;
    margin-bottom: 5rem;
}
main .text p span {
    color: var(--accent);
    font-weight: 900;
}
main .text .btn {
   margin-top: 3rem;
}

main .text .btn a {
    padding: 1rem 1.8rem;
    font-size: 1rem;
    border-radius: 1.6rem;
    text-decoration: none;
    border: 3px solid var(--accent);
    text-align: center;
    width: 9rem;
    background: var(--accent);
    color: white;
    font-weight: bolder;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    z-index: 1;
    font-family: sans-serif;
}
main .text .btn a:hover {
    transition: 0.5s;
    border: 3px solid var(--accent);
    background-color: transparent;
    color: var(--accent);
}

.demo-page {
    color: var(--primary);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    padding-left: 1rem;
    min-height: 70vh;
    display: none;
}
.demo-page span{
    color: var(--accent)
}

@media only screen and (min-width: 768px) {
    .icon {
        display: none;
    }
    header {
        padding-left: 3rem;
        padding-right: 3rem;
    }
    header nav ul {
        display: flex;
        flex-direction: row;
    }
    header nav ul li a {
        margin-left: 1rem;
    }
    main {
        display: flex;
        margin-top: 0rem;
        justify-content: space-around;
        align-items: center;
        padding: 0rem 4rem;
        gap: 1rem
    }
    main .text {
        min-width: 350px;
    }
    main .img {
        display: block;
    }
    main .img img {
        height: 30rem;
    }
}  
.typing {
    width: 36ch;
    animation: typing 2s steps(36), blink .5s step-end infinite alternate;
    white-space: nowrap;
    overflow: hidden;
    border-right: 3px solid;
}
  
@keyframes typing {
    from {
        width: 0
    }
}
      
@keyframes blink {
    50% {
        border-color: transparent
    }
}