body {
    font-family: Muli, Arial, Helvetica, sans-serif;
    color: #d8d4c5;
    width: 100vw;
    height: 100vh;
    border: 0;
    padding: 0;
    margin: 0;
    background-color: #262525;
    -webkit-text-size-adjust: 100%;
    display: block;
    text-align: center;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
}

.content {
    padding: 3vw 2.8vw 3.0vw 2.8vw;
    position: absolute;
    top: 49vh;
    left: 50%;
    opacity: 1;
    transform: translateY(-50%) translateX(-50%);
    -webkit-transform: translateY(-50%) translateX(-50%);
    animation: fadein-base 3.0s cubic-bezier() 0.5s 1 forwards;
    -webkit-animation: fadein-base 3.0s ease 0.5s 1 forwards;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    text-align: center;
}

.logo {
    position: relative;
    width: 300px;
    height: calc(300px*.254767362812831);
    top: 5vh;
    opacity: 0;
    background-image: url(./img/sb_logo.svg);
    background-size: 100%;
    background-repeat: no-repeat;
    animation: fadein-logo 1.0s cubic-bezier() 0.5s 1 forwards;
    -webkit-animation: fadein-logo 1.0s ease 0.5s 1 forwards;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    will-change: top, opacity;
}

@-webkit-keyframes fadein-logo {
    100% {
        top: 0vh;
        opacity: 1;
    }
}

@keyframes fadein-logo {
    100% {
        top: 0vh;
        opacity: 1;
    }
}

.discription {
    position: relative;
    text-align: center;
    letter-spacing: 0.05px;
    text-justify: inter-word;
    line-height: 17px;
    margin-top: 15px;
    width: 300px;
    height: 115px;
    font-size: 12px;
    opacity: 0;
    animation: fadein-discription 1.5s cubic-bezier() 1.0s 1 forwards;
    -webkit-animation: fadein-discription 1.5s ease 1.0s 1 forwards;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    will-change: opacity;
}

@-webkit-keyframes fadein-discription {
    100% {
        opacity: 1;
    }
}

@keyframes fadein-discription {
    100% {
        opacity: 1;
    }
}

.alert_ios {
    visibility: visible;
    display: none;
}

.btn {
    width: 295px;
    height: 45px;
    display: flex;
    overflow: hidden;
    user-select: none;
    white-space: nowrap;
    text-decoration: none;
    text-transform: none;
    text-transform: capitalize;
    font-size: 14.5px;
    line-height: 1.3;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    justify-content: center;
    align-items: center;
    flex: 0 0 160px;
    margin: 0px;
    mix-blend-mode: lighten;
    padding-top: 0px;
    padding-bottom: 2px;
    opacity: 0;
}

.btn.-bold {
    font-weight: 700;
    letter-spacing: 0.25px;
    background-color: #d8d4c5;
    color: #262525;
}

.btn.-regular {
    letter-spacing: 0.25px;
    background-color: #2A2A2A;
    color: #d8d4c5;
}

#btn_install {
    position: relative;
    margin-top: 10px;
    display: flex;
    letter-spacing: 0.25px;
    transition: background-color 200ms ease-in-out;
    animation: fadein-btn 1.5s cubic-bezier() 1.5s 1 forwards;
    -webkit-animation: fadein-btn 1.5s ease 1.5s 1 forwards;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    will-change: opacity;
}

#btn_install:hover {
    background-color: #fff9e8;
}

#btn_github {
    position: relative;
    margin-top: 10px;
    padding-bottom: 0px;
    transition: background-color 200ms ease-in-out;
    animation: fadein-btn 1.5s cubic-bezier() 2.0s 1 forwards;
    -webkit-animation: fadein-btn 1.5s ease 2.0s 1 forwards;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    will-change: opacity;
}

#btn_github:hover {
    background-color: #2F2F2F;
}

@-webkit-keyframes fadein-btn {
    100% {
        opacity: 1;
    }
}

@keyframes fadein-btn {
    100% {
        opacity: 1;
    }
}

.icon_install {
    width: 28px;
    height: 28px;
    margin-left: -5px;
    margin-right: 10px;
    background-image: url(./img/install.svg);
    background-size: 100%;
}

.icon_github {
    width: 23px;
    height: 23px;
    margin-left: -1px;
    margin-right: 10px;
    padding-bottom: 1px;
    background-image: url(./img/github_logo.svg);
    background-size: 100%;
}

@media (orientation: landscape) and (max-width: 1080px) {
    .logo {
        width: 33vw;
        height: calc(33vw*0.254767362812831);
    }

    .discription {
        margin-top: 1vw;
        width: 33vw;
        height: 14.7vw;
        font-size: 1.5vw;
        line-height: 2.1vw;
    }

    .btn {
        width: 33vw;
        height: 5vw;
        font-size: 1.8vw;
        padding-top: 0.25vw;
    }

    #btn_install {
        display: none;
    }

    .alert_ios {
        margin-top: 1.0vw;
        margin-left: 0.0vw;
        display: block;
        text-align: center;
        letter-spacing: 0.03vw;
        line-height: 2.2vw;
        font-size: 1.5vw;
        width: 33vw;
        height: 6vw;
    }
}

@media screen and (min-width: 0px) and (max-width: 1280px) {}

@media screen and (orientation: portrait) and (min-width: 0px) and (max-width: 768px) {
    .content {
        top: 45vh;
    }

    .logo {
        width: 60vw;
        height: calc(60vw*0.254767362812831);
    }

    .discription {
        letter-spacing: 0.03vw;
        line-height: 4vw;
        margin-top: 3vw;
        width: 60vw;
        height: 35vw;
        font-size: 2.75vw;
    }

    .alert_ios {
        margin-top: -3.0vw;
        line-height: 3.5vw;
        margin-left: 0.0vw;
        display: block;
        text-align: center;
        letter-spacing: 0.03vw;
        font-size: 2.5vw;
        width: 59vw;
        height: 3vw;
    }

    .btn {
        width: 59vw;
        height: 9vw;
        font-size: 2.9vw;
        padding-top: 0.25vw;
    }

    .btn.-regular {
        letter-spacing: 0.25vw;
    }

    #btn_install {
        display: none;
    }

    #btn_github {
        margin-top: 12.0vw;
    }

    .icon_github {
        margin-left: -1.5vw;
        margin-right: 1.5vw;
    }
}

@media screen and (min-width: 0px) and (max-width: 640px) {}

@media screen and (min-width: 0px) and (max-width: 480px) {}

@media screen and (min-width: 0px) and (max-width: 320px) {}