.bg-default{
 background: #d1dade;
}
.flex{
 display: flex;
}
.flex-row{
 flex-direction: row;
}
.flex-column{
 flex-direction: column;
}
.flex-center{
 justify-content: center;
}
.flex-start{
 justify-content: flex-start;
}
.flex-end{
 justify-content: flex-end;
}
.flex-between{
 justify-content: space-between;
}
.flex-around{
 justify-content: space-between;
}
.flex-item-center{
 align-items: center;
}
.flex-item-start{
 align-items: flex-start;
}
.flex-item-end{
 align-items: flex-end;
}
.flex-self-start{
 align-self: flex-start;
}
.flex-self-end{
 align-self: flex-end;
}
.flex-self-center{
 align-self: center;
}