* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: all 0.4s ease;
    
}
@media (prefers-color-scheme: dark) {
    * {
        background-color: #1f1f1f;
        color: whitesmoke;
    }
    .header-main p {
        color: whitesmoke;
    }
}
@media (prefers-color-scheme: light) {
    * {
        background-color: rgb(246, 245, 247);
    }
    .header-main p {
        color: #7F7F82;
    }
}
body {
    font-family: 'Lato', sans-serif;
}
header {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
    margin-top: 40px;
}
.header-main h1 {
    margin-bottom: 0.2em 
}
.header-main p {
    font-size: 1.125rem;
}
.intro {
    margin: 40px auto;
    font-size: 1.12rem;
    letter-spacing: 0.01em;
}
.download {
    text-align: center !important;
    display: block;
}
.download img {
    width: 160px;
    display: inline !important; 
}
.download-header {
    text-align: left !important;
    display: block;
}
.download-header img {
    padding-top: 8px;
    width: 120px;
    display: inline !important;
}
footer {
    margin: 50px 0;
    text-align: center;
    clear: both;
}  
footer a {
    color: #A9A9A9;
    text-decoration: none;
    font-weight: 500;
    margin-left: 10px;
    margin-right: 10px;
}
@media (min-width: 768px) {
    header .header-icon {
        width: 200px;
        height: 200px;
    }
    .header-icon img {
        width: 100%;
    }
    .header-main {
        padding-left: 40px;
    }
    .intro {
        max-width: 660px;
    }
}
@media (max-width: 549px) {
    .header-icon {
        width: 100px;
        height: 100px;
    }
    .header-icon img {
        width: 100%;
    }
    .intro {
        padding-left: 20px;
        padding-right: 20px;
    }
    header p {
        font-size: 0.9rem;
    }
    .header-main {
        padding-left: 10px;
    }
    footer a {
      display: block;
      text-align: center;
      line-height: 2;
    }
}  
@media (min-width: 549px) {
    footer a:not(:last-child) {
      margin-right: 6%;
    }
}