How can I make the table stretch to the full width of the screen instead of being ridiculously narrow?

[AKrechko]

How can I make the table stretch to the full width of the screen instead of being ridiculously narrow?

[leavmalone-hub]

Update Your Preferences
In MarkText, press Ctrl + , (comma) to pull open your configuration panel.Click Theme in the left sidebar menu.Scroll all the way down to the bottom of the right panel to your Custom CSS input box.Leave your existing code in place, click at the very end of it, press Enter to make a new line, and press Ctrl + V to paste the new table code block.

THEME:
#ag-editor-id {
max-width: 100% !important;
width: 100% !important;
padding-left: 40px !important;
padding-right: 40px !important;
box-sizing: border-box !important;
}

#ag-editor-id table,
#ag-editor-id figure {
width: 100% !important;
max-width: 100% !important;
}

.el-popper, .el-dropdown-menu, .el-tooltip__popper,
.v-contextmenu, .v-modal, .quick-insert,
.megamenu, .pref-dialog, .settings-dialog,
[class*="menu"], [class*="popover"], [class*="dropdown"],
[class*="dialog"], [class*="modal"] {
width: auto !important;
max-width: none !important;
}

FIXED WIDTH ALTERNATIVE: ( Typora IS ABOUT this -> max-width: 1200px !important; )

#ag-editor-id {
max-width: 1200px !important;
width: 100% !important;
margin-left: auto !important;
margin-right: auto !important;
padding-left: 40px !important;
padding-right: 40px !important;
box-sizing: border-box !important;
}

[leavmalone-hub]

This might be better:

:root {
--editor-content-width: 100%; /* fluid (current default) /
/ --editor-content-width: 1200px; ← uncomment for fixed width instead */
}

/* 0.19.1 */
#ag-editor-id {
max-width: var(--editor-content-width) !important;
width: 100% !important;
margin-left: auto !important;
margin-right: auto !important;
padding-left: 40px !important;
padding-right: 40px !important;
box-sizing: border-box !important;
}

/* 0.20.0 RC */
.mu-editor .mu-container {
max-width: var(--editor-content-width) !important;
width: 100% !important;
margin-left: auto !important;
margin-right: auto !important;
padding-left: 40px !important;
padding-right: 40px !important;
box-sizing: border-box !important;
}