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

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    background-color: aquamarine;
    background-image: url(images/background.png);
    background-repeat: repeat;
}

header {
    padding-left: 20px;
    padding-top: 20px;
    background-color: white;
    margin: 0px;
    border-bottom: 5px solid #000 ;
}

.outlined-yellow {
    color: yellow;
    font-weight: bold;
    text-shadow:
    -1px -1px 0 #000,
     1px -1px 0 #000,
    -1px  1px 0 #000,
     1px  1px 0 #000;
}

.outlined-purple {
    color: violet;
    font-weight: bold;
    text-shadow: 
    -1px -1px 0 #000,
    1px -1px 0 #000,
   -1px  1px 0 #000,
    1px  1px 0 #000;
}

.container {
    padding-top: 5%;
    padding-bottom: 5%;
    display: flex;
}

.icon {
    width: 20%;
    height: auto;
    display: block;
    margin: auto; /* 中央寄せ（任意） */
}

.screenshot {
    width: 100%;
    height: auto;
}

.sc1 {
    width: 15%;
    height: auto;
    margin-right: 2%;
    margin-left: 4%;
}
.sc2 {
    width: 15%;
    height: auto;
    margin-right: 2%;
    margin-left: 2%;
}
.sc3 {
    width: 15%;
    height: auto;
    margin-right: 2%;
    margin-left: 2%;
}

.sc4 {
    width: 15%;
    height: auto;
    margin-right: 4%;
    margin-left: 2%;
}

p {
    text-align: center;
    text-shadow: 
    -1px -1px 0 white,
    1px -1px 0 white,
   -1px  1px 0 white,
    1px  1px 0 white;
}

footer {
    border-top: 5px solid black;
    background-color: white;
    margin-bottom: 0;
}

.footer_icon {
    width: 5%;
    aspect-ratio: 1 / 1; 
    object-fit: contain;
}

.download {
    display: flex;
    justify-content: flex-start;
}

.footer_container {
    padding: 20px;
    display: flex;
    justify-content: space-between;
}

.button {
    display: inline-block;
    background-color: #00bcd4;
    color: white;
    font-weight: bold;
    padding: 12px 24px;
    margin: 10px;
    border-radius: 8px;
    text-decoration: none;
    box-shadow: 2px 2px 5px rgba(0,0,0,0.3);
    transition: background-color 0.3s ease;
    white-space: nowrap; /* ←これを追加 */
}

@media screen and (max-width: 768px) {
    .container {
        flex-direction: column;
        align-items: center;
    }

    .sc1, .sc2, .sc3, .sc4, .icon {
        width: 80%;
        margin: 10px 0;
    }

    .footer_container {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .download {
        flex-direction: column;
        align-items: center;
    }

    .footer_icon {
        width: 30%;
    }

    .button {
        width: 80%;
        text-align: center;
    }
}