[title="Monday"] {
visibility: hidden;
}

[title="Monday"]:after {
content: 'L';
visibility: visible;
}

[title="Tuesday"] {
visibility: hidden;
}

[title="Tuesday"]:after {
content: 'M';
visibility: visible;
}

[title="Wednesday"] {
visibility: hidden;
}

[title="Wednesday"]:after {
content: 'X';
visibility: visible;
}

[title="Thursday"] {
visibility: hidden;
}

[title="Thursday"]:after {
content: 'J';
visibility: visible;
}

[title="Friday"] {
visibility: hidden;
}

[title="Friday"]:after {
content: 'V';
visibility: visible;
}

[title="Saturday"] {
visibility: hidden;
}

[title="Saturday"]:after {
content: 'S';
visibility: visible;
}

[title="Sunday"] {
visibility: hidden;
}

[title="Sunday"]:after {
content: 'D';
visibility: visible;
}