import matplotlib.pyplot as plt

plt.rcParams["figure.figsize"] = [7.00, 3.50]
plt.rcParams["figure.autolayout"] = True

plt.figure()

ax = plt.gca()

ax.xaxis.set_ticks_position('bottom')
ax.yaxis.set_ticks_position('left')

ax.spines['bottom'].set_position(('data', 0))
ax.spines['left'].set_position(('data', 0))

for label in ax.get_xticklabels():
    label.set_fontsize(12)
    label.set_bbox(dict(facecolor='red', edgecolor='black', alpha=0.7))

plt.show()