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

.posts_container .trigger_container{
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-bottom: 20px;
}

.posts_container .trigger_container button{
    padding: 5px;
    border: 2px solid black;
    background-color: white;
    cursor: pointer;
    transition: box-shadow 0.5s;
}

.posts_container .trigger_container button:hover{
    box-shadow: 2px 2px 5px black;
}

.posts_container .trigger_container button:active{
    transform: scale(0.9);
}

.posts_container .trigger_container button.active{
    border-bottom: 4px solid black;
}

.posts_container{
    display: flex;
    width: 600px;
    margin: 40px auto;
    flex-direction: column;
}

.posts_container .content{
    height: 400px;
    overflow-y: scroll;
    width: 100%;
    border: 2px solid black;
    padding: 5px;
}

.gallery_container{
    height: 500px;
    width: 600px;
    margin: 0 auto;
    margin-bottom: 40px;
    display: flex;
    justify-content: space-between;
}

.gallery_container .content{
    width: 400px;
}

.gallery_container .trigger_container{
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.gallery_container .trigger_container img{
    width: 70px;
    height: 70px;
    cursor: pointer;
    transition: box-shadow 0.5s;
    border-radius: 5px;
}

.gallery_container .trigger_container img:active{
    transform: scale(0.9);
}

.gallery_container .trigger_container img:hover{
    box-shadow: 2px 2px 5px;
}